甘南岩蕨 gan nan yan jue

Plants 12-17 cm tall. Rhizomes ascending, scaly; scales brown, lanceolate, ca. 3 mm, membranous. Fronds clustered; stipe dark stramineous, 6-9 cm, ca. 1 mm in diam., brittle, with sparse articulate hairs and few linear scales, upper part of stipes usually fallen, middle and lower parts persistent, clustered (articulation not seen); lamina 1-pinnate, linear-lanceolate, herbaceous, pubescent, abaxial surface more densely pubescent, gradually attenuate to both ends; rachis with mixture of sparse articulate hairs and linear scales; pinnae 10 or 11 pairs, sessile, well separated, spreading; lower 1 or 2 pairs slightly shortened, ovate, ca. 4 mm; middle pinnae largest, suborbicular-ovate, 5-6 × 3-5 mm, base cuneate, margin irregularly undulate, slightly involute, apex obtuse. Veins obscure, pinnate, nearly reaching laminar margin. Sori orbicular, medial, 3-5 per pinna; indusia consisting of many curly, multicellular hairs.

● Rock cliffs in mountain valleys; 3500-4200 m. S Gansu.